721838048 has 24 divisors (see below), whose sum is σ = 1425767112. Its totient is φ = 359738496.

The previous prime is 721838041. The next prime is 721838057. The reversal of 721838048 is 840838127.

721838048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 721837996 and 721838014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721838041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26915 + ... + 46562.

It is an arithmetic number, because the mean of its divisors is an integer number (59406963).

Almost surely, 2^721838048 is an apocalyptic number.

It is an amenable number.

721838048 is a deficient number, since it is larger than the sum of its proper divisors (703929064).

721838048 is a wasteful number, since it uses less digits than its factorization.

721838048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73794 (or 73786 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 721838048 is about 26867.0439014046. The cubic root of 721838048 is about 897.0429898359.

The spelling of 721838048 in words is "seven hundred twenty-one million, eight hundred thirty-eight thousand, forty-eight".